METHOD FOR MANUFACTURING THICK PLATE

• Main Authors: NAKAGAWA SHIGEMASA, KITA KAZUAKI, KOJIMA JIRO, WAKAMATSU HIRONORI
• Format: Patent
• Language: English
• Published: 21.04.2011
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a method for manufacturing a thick plate capable of reducing the ride-up amount without adding any apparatus. SOLUTION: In a hot rolling process of a thick plate for manufacturing the thick plate by the hot-rolling after heating a slab in a heating furnace, a shape of an end face of a preceding material to be rolled having its end face of a double-bulge shape along its rolling direction is measured. When the ride-up amount d1 on the surface side of the preceding material to be rolled is larger than the ride-up amount d2 on the back side of the preceding material, the heating amount on the back side of the slab in the heating furnace is increased. When the ride-up amount d1 on the surface side of the preceding material is smaller than the ride-up amount d2 on the back side of the preceding material, the heating amount on the back side of the slab in the heating furnace is decreased, and the succeeding slab is heated and then rolled. COPYRIGHT: (C)2011,JPO&INPIT